基于GIS的金秀瑶族自治县地质灾害易发分区评价研究
Nonferrous Metals Abstract(2020)
Abstract
文章以金秀瑶族自治县为例,利用地质环境要素对地质灾害易发性进行评价,并通过ArcGIS软件实现可视化.选取了包括地质灾害发育密度、地貌类型、地形坡度、工程地质岩组、风化土层厚度、地质构造、人类活动强度、多年平均降雨量8个影响地质灾害易发性的地质环境因素.分区结果显示,金秀瑶族自治县地质灾害高易发区总面积为1143.56 km2,占全县总面积的45.4%;地质灾害中易发区总面积为598.65 km2,占全县总面积的23.8%;地质灾害低易发区总面积为662.42 km2,占全县总面积的26.3%;地质灾害不易发区总面积为113.37 km2,占全县总面积的4.5%,现状未见地质灾害发育.
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